Home / 21,639.99-32,440.40-8,488.83

Finding the Fourth Proportional to 21,639.99, 32,440.40 and 8,488.83

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Solution

The fourth proportional to 21,639.99, 32,440.40 and 8,488.83 is: 12,725.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,639.99 : 32,440.40 = 8,488.83 : x
  2. Step 2: Convert to fraction form
    21,639.99/32,440.40 = 8,488.83/x
  3. Step 3: Cross multiply
    21,639.99x = 32,440.40 × 8,488.83
  4. Step 4: Simplify right side
    21,639.99x = 275,380,998.29
  5. Step 5: Solve for x
    x = 275,380,998.29/21,639.99
  6. Step 6: Final answer
    x = 12,725.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.